Table of Contents
Planning the Measurements
MEASUREMENT SCALES
Nominal (Categorical)
Ordinal (Categorical)
Continuous or Ordered discrete
Precision of Measurement
Precision of Measurement
Precision of Measurement
Precision of Measurement
Precision of Measurement
Strategies for Reducing Random Error (RE) in order to increase Precision
1. Standardizing the measurement methods in an operations manual
2. Training and certifying the observer
3. Refining the instrument
4. Automating the instrument
5. Repeating the measurement
The Accuracy of a Measurement
The Accuracy of a Measurement
The Accuracy of a Measurement
The Accuracy of a Measurement
The Accuracy of a Measurement
Strategies for Reducing Systematic Error (SE) in order to increase Accuracy
1. Standardizing the measurement methods in an operations manual
2. Training and certifying the observer
3. Refining the instrument
4. Automating the instrument
5. Making unobstrusive measurements
6. Blinding
7. Calibrating the instrument
Precision Accuracy
Precision Accuracy
Precision Accuracy
Precision Accuracy
Validity of Abstract Variables
Individual Measurements Should be:
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Author: SeonAe Yeo
Email: [email protected]
Home Page: http://www-personal.umich.edu/~seonaeyo
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